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[TowerTalk] An alternate yagi feed method

To: <towertalk@contesting.com>
Subject: [TowerTalk] An alternate yagi feed method
From: "Jim Thomson" <jim.thom@telus.net>
Date: Tue, 16 Dec 2014 08:59:32 -0800
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
Date: Mon, 15 Dec 2014 14:35:58 +0000
From: Steve Hunt <steve@karinya.net>
To: towertalk@contesting.com
Subject: Re: [TowerTalk] An alternate yagi feed method

Really?

What's to stop CM still flowing along the braid? Or along the boom? Or both?

Steve G3TXQ


On 15/12/2014 03:11, Jim Thomson wrote:
> Then no requirement for a balun, and no pesky CM current flow anywhere.

##  hey, that’s Mosley talking, not me !    Some Mosley manuals state to use a 
coiled up coax choke balun,
and most of their manuals say not to bother with any balun.  On a similar note, 
I built several hb yagis
back in the 70s + 80s.... plumbers delight, with all eles bonded to the boom, 
including the
DE.  They were all gamma matched.   No balun used.   Pattern was not screwed up 
either.
Superb FB + FS.  No rf problems anywhere.     Should these gamma /omega matched 
yagis
have a CM choke installed ..or not ?     I never used a choke on any of my .25 
wave sloper
ants either.  Just ran the coax up the inside of the tower. 

Jim   VE7RF  

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